Subaru Crew Problems & Solutions

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Comments

  • otis123otis123 Member Posts: 439
    Hi Craig,

    I've been away from the forum for awhile. My LLBean is still truckin' along at 67K with no problems.... Well, I do have the gusset wind noise on the driver's side which is driving me crazy. How long did it take to replace yours?

    Also, I haven't done the 60K service, yet. I just bought the plugs from Liberty Subaru Sat. I'm doing the engine air filter (5 seconds?) and oil change myself. What else do they normally do when they change the spark plugs at 60K. Do they adjust valves or anything like that? Is it safe to say "just change the plugs" to keep my costs down? I don't need to pay $200. extra to have them look at fluids, brakes, etc.

    Also, finally broke down and bought the stupid day/night mirror...since mine stopped working at 30K!! So, I guess there were 2 things that did not meet my expectations...the gusset noise and the auto day/night mirror. Compass still works, though!

    All in all a very reliable car!! Good to see you bought another Subaru!!

    Thanks!

    Ralph
  • edunnettedunnett Member Posts: 553
    Subulu - like everyone else says, this is sort of a known Subaru thing. The problem is the flywheel which is part of the clutch assembly. I think the Subie flywheels have a tendency to warp and that will cause the bucking you notice. On other makes a flywheel resurface would only be about $65 but the labor to pull the flywheel out and then reassemble - perhaps $300. On a Subie, I've never heard of the flywheel being resurfaced, only replaced. Perhaps because the Subie flywheel lacks the integrity to withstand multiple resurfacing? I'm guessing. Anyway, I have heard that there is an upgrade for the flywheel available if you become enough of a squeaky wheel at your dealership. In the meantime, on my own manual transmission, I found that a quick rev on the accelerator when I first put the transmission in 1st gear WITH my foot on the clutch seemed to help on the initial take-off.

    As for your reverse issues... I've never had a car (toyota, subaru, honda) that slid nicely into reverse. I think the reason is that the transmission has 5 (not 5 + reverse) synchro-meshed gears. So reverse is spinning at a speed that the engine will never match. But the speed is close to the speed of 1st or 2nd gear - which are synchro meshed. So putting the car in 1st or 2nd (no need to roll) before into reverse should help the engine match the speed that reverse gear is spinning and make it easier to get into gear. My old Honda Civic had instructions for getting into reverse: put tranny in 1st with foot on clutch, neutral foot off clutch, reverse foot on clutch, bingo.

    Hope that helps
    elissa
  • c_hunterc_hunter Member Posts: 4,487
    It probably took about 30 minutes to replace the gusset. If the seal is not damaged, you can probably adjust yours instead of installing a replacement. I guess it depends on where the problem is and why. Since they only cost about $45, maybe just do the replacement rather than fussing around with it.

    I traded my Bean before 60K (it was a great car up to 45K) so I never messed with plugs and I don't remember the scheduled stuff for 60K (probably a coolant change and brake fluid change at least, and probably a new fuel filter in addition to what you already mentioned). I guess go by whatever is in the manual and nothing more -- they will definitely try to pad it if you are not specific.

    Craig
  • c_hunterc_hunter Member Posts: 4,487
    Good explanation on getting into reverse!

    My understanding on the judder issue is that the clutch plate material has a problem and that is the root cause (it actually affected several makes of Japanese cars). The judder eventually causes hot spots on the flywheel in many cases, and they just replace the flywheel alltogether.

    Craig
  • solowalkersolowalker Member Posts: 118
    I need a new rubber boot cover on the right front inside CV joint....2000 Forester S automatic @75,000 miles.. All the lube came out and spilled on the exhaust pipe and converter...Smells terrible.

    Once I get the new boot on is there a substance to spray on the boots to keep them from cracking again?...

    Anybody ever use an aftermarket boot repair kit like a Speedi boot? Do they last?

    Thanx for any info...
  • edunnettedunnett Member Posts: 553
    Thanks Craig! But I mis-spoke in the previous post. I should have said:
    My old Honda Civic had instructions for getting into reverse: put tranny in 1st with foot on clutch, neutral foot ON clutch, reverse foot on clutch, bingo. During that process, never take foot off clutch. However, if you have to re-do that sequence, I'd always start fresh and put in neutral, foot off clutch in between trials. Seems like a lot of work for one little gear though, doesn't it? ;-)
    Elissa
  • c_hunterc_hunter Member Posts: 4,487
    Make sure you clean out the joint and re-pack it with grease. If any sand/water got in there you're toast!

    I have used a repair kit with a split-boot once (on a 79 Dodge Colt), and it seemed to hold up fine. In fact I asked the dealer to put on a permanet boot a few years later and they told me not to bother -- the split boot was doing fine.

    You can apply silicone spray to the boot if you are worried about cracking.

    Craig
  • amesames Member Posts: 1
    Recently my 2001 Subaru Forester began to occasionally run very rough and buck and eventually the "check engine" light came on. I took it to my mechanic who said the first cyclinder was occasionally misfiring because the ignition coil was coroded. So I replaced the ignition coil at some cost to me. This would have been covered under warranty but I was at 37,000 miles and the warranty stops at 36,000. It seems odd to me that something like this should have happened to so young a car. Has anyone else had this problem?
  • edunnettedunnett Member Posts: 553
    FYI: I checked with my dealer yesterday and the coolant conditioner (added to my '01 Forester to prevent head gasket issues) is not used in the newer models. Whatever issue made this warranted in the earlier models no longer exists FWIW.
    Elissa
  • lfdallfdal Member Posts: 679
    Elissa - I asked SOA directly at their 1-800 number and was told that the conditioner is going in **all** of the 2.5L even those in the XT. Which seems strange since the block is different than the regular NA 2.5L and I think the heads may be as well.

    Should we draw straws and see who to believe?

    Larry
  • threesinthreesin Member Posts: 50
    I've been away for a while, but upon my return to the boards, the problem areas seem to be the same, so I'll throw out a new one:

    It seems that I've read on these boards that synthetic oil can be used from the first oil change (3000 mi recommended by Subaru). However, when I told my Subaru service advisor to use my synthetic oil at the 3K oil change on our '05 Legacy GT, he replied that he would if I insisted, but he advised against it. He said he's seen too many Subarus that used synthetic oil prior to the 10K-15K mi point develop excessive oil consumption problems. I've since talked with friends from other areas whose service advisors had told them the same thing. I'd appreciate any comments from the experts that will shed light on the apparent lack of agreement in this area.

    FWIW, I've been driving MTs of all makes for the better part of 50 years now, and most of them have proven difficult getting into reverse gear from time to time, particularly when cold. I have always just put it back in neutral, released the clutch, paused, depressed the clutch, and tried again. I'm generally successful within 2-3 tries. If that fails, not very often, then I'll go to first gear, back to neutral and then to reverse, as outlined above.

    For those of you who have followed the saga of my recent Subaru purchases, you'll be pleased to know that I recently added a silver '00 Impreza RS cpe with 18.5K mi to my stable. Are they fun, or what??:-)))

    Hope all is well with everyone...........Terry
  • locke2clocke2c Member Posts: 5,038
    they are fun but horribly slow and oddly geared (5spd). I had a 3 year love affair with my '99 Impreza RS... I'd buy another, but only to do a WRX or STi powertrain swap.

    I used synthetic oil in mine and had no problems with oil consumption except during autocross or track days, and I am certain that is due to lateral Gs.

    excessive oil consumption is a cylinder ring problem, find it and fix it when it occurs. most cars will have no problems with it.

    headgaskets on the other hand... yikes

    ~Colin
  • troop2shostroop2shos Member Posts: 235
    Just lightly bumping 2nd or 1st gear syncro in a quick movement is generally all you need to expedite reverse gear engagement.
  • jay_24jay_24 Member Posts: 536
    My 2001 OB wagon is getting close to needing tires. The tread is actually pretty good yet but one tire is experiencing a bit of cupping and is noisy and they do have 60k miles on them.

    The three tires I have in mind are:

    BFGoodrich Traction T/A
    Bridgstone G009
    Goodyear Assurance TripleTred

    Tire Rack rate all fairly high. One customer complained about the Traction T/A cupping rather quickly on his Subie.
    The Goodyear is the most expensive but highest treadlife(80k). Bridgestone is the cheapest but lowest treadlife(50k). All rated high in snow traction which is good for Wisconsin/Minnesota.

    Whats the best choice?
    Does a T vs H speed rating mean much?

    --Jay
  • ateixeiraateixeira Member Posts: 72,587
    Make sure you clean the grease thoroughly. Spray some Simple Green on there and hose it off until all that stuff is gone. It could be a fire hazard on that hot exhaust.

    -juice
  • philip24philip24 Member Posts: 1
    I had my forester to dealership for service and they noticed that the inside of the back tires were worn down quite a bit. They said I should have a wheel alignment done so I did. It wasn't out of line. There is only 21000 miles on the car and only 16000 miles on these tires. Anyone else with the same problem out there?
  • ateixeiraateixeira Member Posts: 72,587
    Ignition coil? Is that a VW? ;-)

    Terry: yes, your RS is fun. I've driven a 2000, matter of fact.

    -juice
  • c_hunterc_hunter Member Posts: 4,487
    Terry, note that the 3000 mi oil change is not called for any longer (normal service schedule) unless you have the H6 engine. Both the 2.5 and 2.5-turbo engines have the first change scheduled for 7500 miles in the 05 Legacy/Outback models.

    Craig
  • joknechtjoknecht Member Posts: 8
    I had the coolant sealant added by Subaru to my 2000 Outback in February and the head gasket leak stopped. Recently the distinctive odor has returned and the coolant level has begun to drop. I just took the car to the dealer and was told that they do not recommend a flush and new sealant, that they will start the entire process all over again with a pressure test and a Subaru rep. Has anyone else experienced (or is experiencing) the problem again? Do colder temperatures make the head gasket problem worse? Is there an ultimate fix for this problem?
  • ateixeiraateixeira Member Posts: 72,587
    Well you are covered for 8 years total so I wouldn't lose sleep. Let them have a look-see.

    -juice
  • suydamsuydam Member Posts: 5,083
    This has been discussed before by many as a problem with some Subarus. Mine also corroded at around 65,000 miles, which was typical for those on this forum that had this happen. Yours seems unduly early for such a problem. I'd talk to a Subaru rep and see if they will replace the part for you at no cost.
    '24 Kia Sportage PHEV
    '24 Chevy Blazer EV 2LT
  • threesinthreesin Member Posts: 50
    Craig,

    Apparently, you are correct. I thought that I'd read in one of my manuals that while not required until the 7.5K mi point, the 3K mi oil change was recommended. However, I just went back to the manuals and couldn't find it:-(

    It seems that there has been a movement within the auto industry to lengthen service intervals, i.e. 100K mi for tune up. While I'm sure the technology has improved, I'm not convinced that part of this move isn't sales hype to show the public they can save $$$ by buying this brand or that. Unfortunately, I'm one of those anal retentive seniors who's been changing oil & filter every 2K-3K miles for over 50 years. I'm a firm believer in the saying, "pay me now or pay me later", when it comes to auto maintenance. I detest the inconvenience of "on-the-road" breakdowns.

    I also believe that if you're going to buy/lease a new car every 3-4 years, you should be able to get by with the 7.5K service interval w/o any probs. However, if you intend to keep a car 10 yrs or more, and clock 150K miles or more, the oil and filter need to be changed, at least every 3750 miles unless you're driving nothing but highway miles, and then the interval can probably be pushed out to 5K miles, particularly if using synthetic oil. Nothing wears the internal parts of engines and transmissions like dirty lubricant, IMHO.

    BTW, "harsh driving conditions" includes the stop and go driving of the urban dweller who stops for groceries, drives two blocks and stops at the PO, drives another two or three blocks and stops at the cleaners, etc.

    Terry
  • baydrivebaydrive Member Posts: 48
    That's strange because I just bought a 2005 Forester and the manual says that having the first oil changed is "recommended" at 3000 miles and required at 7500......now I am wondering what to do.
  • jim49jim49 Member Posts: 2
    I have a 2002 Outback Limited. I love this car EXCEPT the jerky transmission in first and second gear at low speeds such as is encountered in stop-n-go traffic or in parking lots. Unless I feather the clutch every time I accelerate at slow speeds, the car jerks and jolts the passengers. The other day, I was pulling into traffic from a parking lot, coasting in second gear. When I accelerated, my wife was drinking some water from a wide mouth Nalgene bottle and got a face and chest dousing from the jolt! I have driven standard transmissions all of my 55 year life and have never had a car that did this to me! The dealer replace some clutch parts twice and then the service manager said that it is "just the fuel injection kicking in at lower rpms". Does anyone else have this problem? My pride is being challenged! I swear that I am a good driver, but this car makes me look/feel like a 15 year old with a learner's permit!

    Thanks for your comments and help!
    Jim49
  • once_for_allonce_for_all Member Posts: 1,640
    Jim, the jerking at low rpm is a characteristic of the AWD and torquey engine. Because of it, I rarely use 1st or 2nd except to accelerate. For stop and start action in traffic, I will accelerate and then shift into nuetral and coast until I need to brake.

    Otherwise, it is a chestful of water experience. I don't think there is anything wrong with your car or your driving. Trying to keep the rpms below 3,000 will help too.

    John
  • jim49jim49 Member Posts: 2
    Well Subulu, see post number 4065! I have a 2002 Outback that I feel the same way about! Maybe this "judder" thing is the answer! I am so frustrated, that I am considering selling the beast and getting something else. Only problem is, I normally purchase a car and drive it for 10 years! I haven't been able to convince myself that I should do this to a wonderful car in every respect except the jerky transmission!

    Jim49
  • c_hunterc_hunter Member Posts: 4,487
    If it's jerky when you are engaging the clutch from a stop, it's likely the judder issue. The new clutch parts, that fix this problem, were not released until early 2003. Some people got replacement clutches before that date and the problem just came back.

    However, if you are already rolling in gear and there is jerkiness, it's probably not the clutch. Keep in mind that if the RPMs are too low, it will be jerky, so make sure you're not lugging the engine.

    My 00 Outback and my 03 WRX had a manual transmission, and I never really had any problems in stop and go traffic. I agree with John, though, it makes more sense to accelerate and coast in neutral. In first especially, the engine has an awful lot of grunt.

    Only other issue I would suspect is a throttle/ignition problem that is making the engine jerk/buck.

    Craig
  • threesinthreesin Member Posts: 50
    I'd get it changed at 3000. As a matter of fact, I did get one of our '05s changed at 3K; and I'll get the WRX changed at 3K also. I'm also gonna continue looking in my manuals for that "recommended" 3000 mi oil change statement;-)

    I'm sure the experts know more about this than I do, but I believe that during the "wear-in" period the process produces very minute particles that should be taken out by the filter. However,there's certainly no harm in changing the oil and filter at 3K, particularly since it's not a great expense!

    MHO............Terry
  • threesinthreesin Member Posts: 50
    Jim, I've been driving MTs for over 50 years, and I too was humbled by my first Subaru, an '02 OBS. Unfortunately, I also had a bad OEM clutch that was replaced within the first 2K miles. After the replacement, the "much talked about shudder/chatter" developed; and the second clutch was replaced as a result of the TSB.

    Needless to say, during all of this I began to wonder if my coordination was starting to suffer. I think I stalled my '02 something like 6 times in the two years I owned it. I don't remember ever stalling a car after I'd learned to drive.

    I've heard all kinds or reasons given for this problem. Many just say it's a Subaru trait. I have a hard time accepting that, after all, MT's have been around for a long time. Other's will say that to avoid excessive wear on the AWD system, the clutch material is soft to absorb the initial launch shock. I decided that it's just more difficult to launch all four wheels smoothly, particularly with the "relatively" small displacement engines used by Subaru.

    Once rolling at very slow speeds, if you try to accelerate slowly, you can end up in the "bucking" motion you've experienced. I believe, once again, that this is a result of the drag of the AWD system coupled with the small displacement engine. The easiest way out is to immediately depress the clutch and start all over again.

    I test drove an '01 OBS and couldn't believe how easy it was to launch smoothly, relative to my '02. Then I realized that the AC was on. You'll notice that with the AC on, the idle moves from 400-500 RPM to about 800 RPM. That simple increase in "baseline" RPM Made the difference in a smooth launch vs a "shudder" launch.

    Stick with it. It just seems to bother us "mature" drivers more than it does all these youngsters. Also, they probably don't have the shudder problem when launching from three or four grand RPM;-)........Terry
  • craig10craig10 Member Posts: 1
    I'm trying to be calm about this situation:

    I went to a dealer. They told me to have the brake pads & rotors resurfaced (front & back) on my next visit. This dealer also told me that since my Forester had less than 36K miles, it would be covered by the basic warranty.

    I moved so I went to a different dealer for the next service. When I went in, I asked for the brake service. They told me it was not covered by the warranty, since it's wear & tear. So I foolishly paid them anyway.

    Afterwards, I called the 800# for Subaru. They confirmed the brake work should have been covered by the warranty. However, they looked into and since I asked the 2nd dealer to replace the brakes and did not ask them to check them, Subaru will not pay for this under the warranty.

    It seems I made a $400 mistake by not asking the 2nd dealer to check the brakes first. This is so unfair!!!

    Craig
  • baydrivebaydrive Member Posts: 48
    You are right, this is unfair. Would it be possible to contact the old dealership and ask them to verify that you did indeed need brake work? How about the dealership that actually did the work? They must have seen that the brakes needed work while they did the job. If all else fails I would try emailing Subaru and complaining again.....and again....and again Hey....it can't hurt and maybe they will do something.

    Good Luck.
  • threesinthreesin Member Posts: 50
    John, using neutral to coast while in traffic, may solve the "Subaru buck" problem; and 99.999% of the time it will lead to no problems. But, there may come a time when that other driver comes out of nowhere, or does the unexpected, and you have to get out of the way in a hurry; but you don't have the power connected. If you remember, in that "panic" situation to shift, you've lost valuable time that might make the difference between being safe and being crunched. Of course, if you don't remember to shift, you could get crunched, but at least you do it with your engine reved to the red line;-)......Terry
  • solowalkersolowalker Member Posts: 118
    Thanks guys for the tips...I decided to have a repair center do the work...They installed a new shaft and 2 new boots for $186.00 (shaft lifetime guarantee)...A Speedi boot (split boot)install would have cost $83...(no guarantee)

    Needless to say, I went with the right decision...

    It's the first repair of any kind I've had on this Forester...except for new Alternator belt which I did myself in 20 minutes and a new battery I put in last week. Original battery lasted 5 years....

    God bless our Veterans....
  • subulusubulu Member Posts: 2
    Thanx to all of you who have given me some sanity back! i'll be bringing a copy of the 'Judder'bulletin to my service writer.
    Thanx again Subulu
  • xwesxxwesx Member Posts: 17,716
    I cannot help but agree with you here. I may not have 50+ years of driving under my belt (okay, I admit it, I'm on year #12 ;-D ), but my rig's never without the right gear for the right speed and it has come in handy on more than one occasion. Running in neutral takes away 50% of your evasive options....
    2018 Subaru Crosstrek, 2014 Audi Q7 TDI, 2013 Subaru Forester, 2013 Ford F250 Lariat D, 1976 Ford F250, 1969 Chevrolet C20, 1969 Ford Econoline 100
  • jfljfl Member Posts: 1,398
    What I've read about synthetic oil in new engines is this: dino oil permits the friction between rings and cylinder walls to properly hone the surfaces to achieve a good seal. Synthetic oil with its better lubricating properties reduces this friction resulting in a poor seal.

    Myth or reality? I have no idea, but it is the current "old wives tale".

    Jim
  • graygray Member Posts: 9
    Sorry, this is long but I felt like I should give the COMPLETE background so all of the info is known. Thanks in advance for the help.

    About the car - 04 Impreza Outback Sport - 4EAT – 75% highway, 25% city. The only really hard driving is making the climb up the mountain we live on everyday, oil changed with Mobil 1 every 5k. This is my wife’s car now but was mine up till mid/late summer.

    April 04 – Kumho 712 tires – 18k miles

    Late May - 20k miles – started noticing lots of pinging and what sounded like valve rattling. Specifically when climbing a grade at about 2500 RPM. Tried to make sure I was in the right gear for the conditions (2nd) instead of letting the tranny decide. Took it to the dealer and they could not reproduce it. Suggested it was just ‘spark knock’ that is common in warmer weather and to use higher octane to see if that helped. It did not. I switched back to 87. This pinging/knocking continues to present.

    Since May til mid June – I was consistently getting 25-26 MPG since the car was purchased in July 04. This was gradually dropping with each tank to 20-21 and even dropping below 20 MPG on occasion

    Mid June - 23k miles– oil change, changed air filter, fuel filter, put in some fuel additive/cleaner – Mileage was still consistently in the 20-21 MPG range.

    July – 25k miles – took the car to the dealer for the mileage issue. They diagnosed bad gas based on kerosene smell to it. Told them I try to get the gas from the same place for both cars and the other was fine. They suggested that I probably got some at one point that was bad and it was long gone and had gunked everything up. They did a fuel induction service and reset the ECU.

    July/August – for 2 weeks after that the MPG was ok – in the 24-25 MPG range and then began steadily dropping back to 20-21 MPG again

    Mid September – put a can of bg44k fuel stuff in – no change in MPG

    Early October - Still getting 20-21 MPG - I noticed the Kuhmos were under inflated. Got them back to a good PSI. First tank after that was pretty good 23-24, next was 20.5 MPG.

    Late October – Still getting 20-21 MPG. I figured maybe I had a fouled plug from the old bad gas earlier and it was time for the 30k service anyway - Took the car in for 30k service – all filters, plugs, etc. Had the Nokian WRs put on to replace the Kuhmos. Inflated to 37 front and 34 back. I reset the ECU when I got home and filled up.

    Since then – First tank got 310 miles to 12.8 gallons (24.2), next tank got 286 to 12.2 (23.4), last tank was only 270 to 13.1 gallons (20.6).

    Help – Any ideas on what could be going on? I think all the basic issues have been considered (gas, tire pressure, plugs, air and fuel filter). I am thinking of taking it to a local shop I trust to try and diagnose the problem and then taking it to the dealer to get it fixed under warranty. Could a problem with the brakes cause this? Like a caliper or something? Should I have them do a compression test? Could it be a bad ECU? Help...
  • locke2clocke2c Member Posts: 5,038
    20-21 MPG is acceptable and not unusual for a Subaru. They have a short stroke and the models with variable valve timing also have turbochargers, so the fleet economy is not particularly great. In addition the 2.5L is a rather large 4 cylinder.

    where are you? oxygenated gas could account for the loss in mileage. it lowers emissions but simply does not produce as much power or burn as evenly as non RFG.

    if the gas is always oxygenated and sometimes you do get 24 mpg and other times only 20, I would look to your usage of AC (anytime the defrost vents are selected on a late model Subaru AC is on) and to your driving... terrain (hilly, flat, in city, on flowing highway, in gridlock), how fast you're going and how quickly you accelerate to that speed.

    you have no problem with the car to diagnose from what I've read so far.

    ~Colin
  • ateixeiraateixeira Member Posts: 72,587
    Mazda charged us more than that for our 626's boot, so the price sounds fair.

    -juice
  • graygray Member Posts: 9
    Colin, but the car consistently got 25-26 for close to a year. It was driven daily from July 03 to May 04 and consistently got that type of MPG, which is close to EPA estimates for the model. It does have variable valve timing but is not turbocharged. I am in Western VA in the Shenendoah Valley.
  • lfdallfdal Member Posts: 679
    It seems that paradoxically you get better mileage right after a ECU reset. The rest of us tend to run rich and then get better over the next tank or two.

    Since you're tracking your mileage so closely and its easy to do, I'd try resetting the ECU each time you fill up, at least for three or four times in a row. If the mileage holds up it could be a sensor, or perhaps a faulty ECU. Have they pulled any codes from the engine? It will still store some things even without lighting the CEL.

    HTH

    Larry
  • ateixeiraateixeira Member Posts: 72,587
    The throttle for the Phase II engines (1999 until they went by-wire in 2004) is hyper sensitive, it's like an on/off switch.

    My 98's throttle is more linear so I think it's smoother than the engine in my wife's 2002 Legacy.

    I think that's what causes the jerkiness. Combined with AWD that puts that on/off power to all four wheels, it can be a challenge to crawl slowly and smoothly.

    Maybe check the throttle cable, there should be a tiny bit of slack. They replaced my wife's throttle assembly completely and it's a bit smoother now.

    The Outback Sport actually does not have AVCS, Subaru's version of variable valve timing. Only the turbos and the H6 have it. Even then not the base WRX, only the STi.

    -juice
  • graygray Member Posts: 9
    The first time it went in and they did the fuel induction stuff they pulled codes and did not find anything (so they said). Unfortunately, since my wife is now the primary driver of this car it would be difficult to reset the ECU on every fill up. I guess I could just take it myself every Saturday for the next couple of weeks, fill up no matter how much has been used, track miles, reset it and repeat the next week to see how it goes. Thanks for clarification on the variable valve timing, juice.
  • lfdallfdal Member Posts: 679
    Resetting the ECU may do nothing, but if you can do it, that's what I'd try first. At that point if it works, you can do the the dealer with some definitive data.
  • xwesxxwesx Member Posts: 17,716
    I think I have this exact same problem with my '96 Legacy Outback. I consistently get 20-22 mpg with a 75/25 highway/city drive (usually commuting). On trips to Anchorage, (350 miles, 100% highway) I can make it up to pehaps 26 which is enough to make it there on one tank, but without much left in the hold.

    I don't have the pinging/knocking any more since I replaced the timing sensors and reset the ECU, but the mileage has not changed much (went from about 18 mpg right before the repair back up to 21ish) and I did not notice even a temporary increase. When I first bought the car (80K), I was running about 28 mpg highway, sometimes higher, but it's been at 21ish for three years now. Summer mileage is actually higher than winter; I can sometimes hit 23 or 24 but it is rare. Some of that is due to increased idling in the winter, though.

    It is an auto as well, though I typically run it semi-manually on the road-like trails/hills to my house.
    2018 Subaru Crosstrek, 2014 Audi Q7 TDI, 2013 Subaru Forester, 2013 Ford F250 Lariat D, 1976 Ford F250, 1969 Chevrolet C20, 1969 Ford Econoline 100
  • ateixeiraateixeira Member Posts: 72,587
    Same here, in winter my mpg drops by about 2. In summer, if I use the A/C, I lose about 1 mpg. So the cold causes more loss than A/C does.

    -juice
  • locke2clocke2c Member Posts: 5,038
    pinging and knocking eh? so what happens if you run 89 or 91-93 octane?

    and yep, juice's winter MPG loss is definitely reformulated gas.

    ~c
  • graygray Member Posts: 9
    Nothing really. Perhaps not quite as much knock, but really not much change when I used 91 for a month+.
  • ateixeiraateixeira Member Posts: 72,587
    I get peak efficiency in Spring and Fall, so must be.

    And the funny thing is most of our highway road trips happen in the Summer.

    -juice
  • xwesxxwesx Member Posts: 17,716
    93?! Not available in these parts, but I did notice that it would take longer for the 'pinging' to resurface when using 91 after running some injector cleaner through the system: It would take about 5-6K rather than 2 or so with 87. The mpg was the same, so I quickly stopped using 91. At an extra $20/month, that's nearly an extra fill up on 87. If I had an H6 or a turbo, I'd be willing to spring for the .20/gal.
    2018 Subaru Crosstrek, 2014 Audi Q7 TDI, 2013 Subaru Forester, 2013 Ford F250 Lariat D, 1976 Ford F250, 1969 Chevrolet C20, 1969 Ford Econoline 100
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